The Northfield Arts Guild’s annual Auction for the Arts is tonight, 7 pm at the NAG’s Division Street headquarters. It’s a 1970’s theme with Mr. Ed Kuhlman doing the live auction Travolta style. “Learn to throw a pot and undulate your middle in a belly dance; try out some theater costumes or makeup while listening to strolling performers; play an ongoing ‘70’s trivia game while taking part in our silent and live auctions…”